.wrap{
    position: absolute;
    top: calc(50% - 300px);
    left: calc(50% - 250px);
    width: 500px;
    height: 600px;
}
.title{
    height: 40px;
    line-height: 40px;
    font-size: 30px;
    text-align: center;
}
canvas {
    display: block;
    margin: 25px auto;
    cursor: pointer;
    box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9;
}
.button{
    display: flex;
    justify-content: space-around;
    height: 60px;
    box-sizing: border-box;
    padding: 15px;
}
.button > div{
    cursor: pointer;
    width: 70px;
    height: 30px;
    box-sizing: border-box;
    border: 2px solid #EE82EE;
    border-radius: 6px;
    font-size: 14px;
    line-height: 26px;
    text-align: center;
    color: #EE82EE;
    background-color: #fff;
}
.button > div:hover{
    color: #fff;
    background-color: #EE82EE;
}

.button > div.unable  {
    border: 2px solid #EE82EE;
    background: #D6D6D4;
    color: #adacaa;
}